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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

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Updated: Jun 22, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Multiple order coded aperture spectrometer.

S D Feller, Haojun Chen, D J Brady

    Optics Express
    |June 18, 2009
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel multiple order coded aperture (MOCA) spectrometer. This compact system enhances spectral range and throughput without sacrificing resolution, offering significant advantages over conventional spectrometers.

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    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

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    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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    Published on: December 22, 2015

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Instrument Design

    Background:

    • Conventional spectrometers face limitations in spectral range, throughput, and physical volume.
    • Improving spectrometer performance often involves trade-offs between resolution, size, and efficiency.

    Purpose of the Study:

    • To introduce a new spectrometer design, the multiple order coded aperture (MOCA) spectrometer.
    • To demonstrate the MOCA's capability to enhance spectral range and throughput.
    • To achieve these improvements without compromising spectral resolution and significantly reducing system volume.

    Main Methods:

    • The MOCA system integrates a multiplex hologram with a coded aperture.
    • This combination allows for simultaneous acquisition of spectral information across multiple diffraction orders.
    • The design leverages computational imaging techniques for spectral reconstruction.

    Main Results:

    • The MOCA spectrometer achieves an order of magnitude reduction in system volume compared to conventional designs.
    • The system demonstrates increased spectral range and throughput.
    • Spectral resolution is maintained at levels comparable to traditional spectrometers.

    Conclusions:

    • The MOCA spectrometer represents a significant advancement in spectrometer technology.
    • Its compact size and high performance make it suitable for applications where space and efficiency are critical.
    • This innovative design overcomes key limitations of existing spectrometer systems.